- changed to a better method for getting headers from Codecs
- some removal of old commented out code in the GATKAgrumentCollection
- changes for the rename of FeatureReader to FeatureSource
- removed the old Beagle ROD
- cleaned up some of the code in SampleUtils
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@3826 348d0f76-0448-11de-a6fe-93d51630548a